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Sheriff's deputies and paramedics were called to a home in the 2000 block of Bay Meadows Court in Forest Hill around 11 p.m. Thursday after getting reports of an injured baby.

Officials said they found the grandmother of the baby, identified as Rebecca Wolf, 52, who told them the baby had been left in the care of Colin Wolf, 19, who also lived at the home, while she went to visit family elsewhere. The grandmother said the baby had been asleep when she left, but when she got home, she found the baby suffering from serious injuries. She immediately called 911.

The baby was taken to Upper Chesapeake Medical Center and then transferred to Johns Hopkins Hospital in Baltimore, where she died Friday morning.

The grandmother told police that Colin Wolf left the home as soon as she got home. Deputies searched the area and found him in the 1800 block of Trudeau Court, where he was arrested and charged with attempted first-degree murder, assault and child abuse. Authorities said those charges will be upgraded to murder now that the baby has died.

A preliminary investigation showed that Colin Wolf struck the child in the face; however, the reasons as to why are not clear. Police did not say where the child's mother was at the time.

Colin Wolf is being held in the Harford County Detention Center without bail.